Supercharger rotors flaking metal

[Rob1968]

Guys anyone ever seen this before?
Ride is Supercharged 3.8 VX.
I had an overheating issue recently due to blown head gasket. As i pulled top end down, i noticed the chrome coating on blower rotors was peeling and flaking off.
All this coating was sucked all through the valves and chambers.
No apparent damage to bores or heads and i havent pulled down blower yet.
My query is... Do i have to rebuild blower with new rotors? Will they still seal efficiently without the chrome coating?
This is my first supercharger so any advice would be great thanks folks.

 

[lowandslow]

The blower will run fine without the coating on the rotors. Will make 2/5th's of f#ck all difference.

 

[Decicrate]

The coating is there to take up the tolerance between the rotors. It is there to help seal the rotors so the blower pumps more air, it also helps to slow air slip which heats up the air.